Carton



Aug. 29, 1944. s J, KLEM 2,357,009

CARTON Filed Jan. 18, 1945 s sheets-sheet 1 l FE1. 1.9 25 f271:55 ,j Cg-N Jaar as Aug. 29,' 1944. s. q. KLEIN 2,357,009

CARTON Filed Jan. 18, y19415 5 Shts-Sheet 2 Aigu 29, 1944. s. J. KLEIN2,357,009

CARTON Filed Jan. 18, 1945 5 Sheets-Sheet 3 1:75. 8, ya 17h 25a 49 47 l:/G-f/fjljg W {44 Ja 271 48 `21a. 27d a 48 I: nl f Imm Hmmm WWII "|1,. jj MIMI| alf I d a', [I

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flo rn e316* Patented Au'g. 29, `1,944 l Stanley J. Klein. Englewood,J.,- assignor to Empire Box Corporation, Garfield, NJ., a corporation o!Delaware i Application January 18, 1943, Serial No. 472,894

ZiClalms.

This invention relates to collapsible cartons made of cardboard or likematerial.

In many instances a collapsible carton is employed to transport anarticle from the place oi erected condition thereof may be expeditiouslyeilected and so to do in a novell manner is one of the important objectsof the present invention.

Cartons of the character to which this invention pertains are usuallyproduced in machines which are effective to fold the cartons to flatcondition and the cartons are usually kept in this condition duringtransportation and like handling thereof. It is, however, advantageousto expedite erection of such a carton from such flat condition toarticle-receiving conditionand to enable such erection ofl a carton'tobe expeditiously effected. in al novel and eflicient manner is yetanother important object oi.' this invention.

It is of course important to retain s; collapsible carton in its erectedcondition for so to do facilitates disposing an article therein and inmany instances as, for example, where a Ifrosted cake or the like isdisposed in aV collapsible carton, it

is advantageous to prevent the carton from cola5 tional engagement withadjacent portions 0f the lapsing into contact with the article packagedopposite walls; to'form in some instances protherein and therefore yetanother important objecting portions on at least selected of the endsject of this invention is to effectively retain a colof the intermediatewalls and to also form por-` lapsible carton in its erected conditiononce it has tions in the opposite walls into which such probeen erected.l do iections may be extended when the carton is It is also advantageousin many uses of car- 'erected whereby the interrelation among theprotons of the character to which this invention .lections and suchportions of the opposite walls relates to have all of the inwardlydisposed faces will be eilective to retain the carton in its erected ofthe wallstnereor free of glue naps. score lines condition: and morespecifically in some instances and the like and a further object of thisinvenl to afford projecting tabs on the ends of the inter tion is to soarrange a collapsible carton. mediate walls andto form openings in theoppo. Yet other objects are to join corner members site walls into whichsuch tabs may project when to opposite ends of opposite walls of acarton the carton is erected, whereby the disposition of along foldlines andl to respectively secure such the tabs into such openinss willbe eifective to recorner members to adjacent portions 0f walls 0f 50tain the carton in its erected condition. the carton tiat respectivelyextend intermediate i Further objects are topx-ovide comer member, theends of said opposite walls and to sofrelate unitary "with and atopposite ends of opposite the corner members to the intermediate wallsto walls of a carton and to secure such comer memwhich they are sosecured that the opposite walls bers to other and opposite walls of thecarton are inclined inwardly toward each other in the Il outwardlythereof whereby the inwardly disposed erected carton; to secure but apart of each corner member to the adjacent portion of an intermediatewall and to form a fold line in each corner member intermediate thesecured and unproduction to the place of sale and once the ,5 securedportions thereof and to so relate the searticle has reached the place ofsale it is recured and unsecured portions of the corner memmoved fromthe carton and placed in a position bers and the fold lines therein asto enable the where it may be readily viewed so as to promoteintermediate walls to be folded over onto the wall the sale thereof. Insuch circumstances it is often of the carton to which these walls areconnected advantageous to return the carton from the place '10 alongfold lines and to also enable the opposite of sale to the place ofproduction of the article walls tobe folded over onto the intermediatewalls and since cartons may be much more readily s as to thereby permitthe carton to be collapsed transported when collapsed into a flatcondition. 'to a substantially flat condition; to so eiect the it isadvantageous to so arrange the carton that aforesaid relation among thecorner members and collapsing thereof to a flat condition from the i5the intermediate walls to which they are respec tively secured and to sorelate the opposite and intermediate walls to each other that at least apart of at least selected oi the 'ends of the intermediate walls willcooperate with adjacent portions of the opposite walls in the erectedcarton in such manner that the carton will be ellectively retained inits erected condition; to relate the corner members and the opposite andintermediate walls in such instances in such manner that the ends of theintermediate walls will so engage adjacent portions of the inwardlyinclined opposite walls as to be effective toretain the carton in itserected condition; to relate the corner members and the opposite andintermediate walls in such manner that when the carton is arranged inits collapsed substantially ilat condition the intermediate walls may beaccommodated between the opposite walls with the end portions of theintermediate w'alls tree of friclfaces of the carton are free of glueflaps, score manner that the opposite walls of the carton will beinclined inwardly toward each other when the carton is erected; torelieve edge portions of such corner members in such manner as toenablesuch corner members to be attached to intermediate walls asaforesaid outwardly thereof but within the area of such intermediatewalls so as to thereby avoid having portions of the corner membersextended outwardly of edges of the intermediate walls; and to relieveedges of corner members of the aforesaid nature insuch manner that therelieved edges of the corner members may be related to corners of thecarton in such manner as to insure that opposite walls of the carton towhich the corner members are connected along fold lines will be inclinedinwardly toward each other in the erected carton without having portionsof the corner members extended beyond corner edges of the carton.

Other and further objects of the present invention will be apparent fromthe following description and claims and are illustrated in theaccompanying drawings which, by way of illustration, show preferredembodiments and the principle thereof and what I now consider to be thebest mode in which I have contemplated applying that principle. Otherembodiments of the invention embodying the same or equivalent principlemay be used-and structural changes may be made as desired by thoseskilled in the art without departing from the present invention and thepurview of the appended claims.

In the drawings,

Fig. 1 is a plan view of an erected carton embodying one form of myinvention;

Fig. 2 is an elevational view looking in at the lower. edge of thecarton shown in Fig. 1;

Fig. 3 is a perspective view of the carton shown in Figs, 1 and 2;

Fig. 4 1s a plan view of the blank from which the carton shown in Figs.1, 2 and 3 is formed;

Fig. 5 is a plan view of the carton shown in Figs. 1, 2 and 3 as thesame is arranged upon folding and interconnection of parts of theblankshown in Fig. 4 and prior to the erection of the carton;

Fig. 6 is a perspective view illustrating the manner in which an erectedcarton such as that shown in Fig. 3 may be expeditiously collapsed;

Fig. 7 is a view illustrating the manner in lwhich the carton shown inFig. 5 may be grasped to be arranged in erected condition as shown inFig. 3;

Fig. 8 is a view similar to Fig. 1 but showing a modified form of myinvention;

Fig. 9 is a view similar to Fig. 2 of an end of the carton illustratedin Fig. 8;

Figs. 10 and. 11 are views respectively similar to Figs. 5 and 3 butshowing the carton illustrated 1n Fig. 8:

Fig. 12 is a plan view of the blank from which the carton shown in Fig.8 is formed; and

Fig. 13 is a sectional detail view taken substantially on the line I3-I3on Fig. 9. v

A blank from which a carton shown in Figs. l to 7 may be produced isillustrated in Fig. 4 and while this blank B as there illustrated issubstantifally square in outline, it will be understood that in manyinstances resort may be had to a rectangular blank. 'I'he particularoutline of the blank will be determined by whether it is desired to havethe opposite dimensions in the erected carton substantially equal towhether one oi such opposite dimensions is to be greater than the other,and it will be understood that resort is had to a blank such as thatshown in Fig. 4 when the aforesaid opposite dimensions are to besubstantially equal.

In the blank B lshown in Fig. 4 score or fold lines IIJ, Il, I2 and I3are formed and merged with another to define the outline of the bottomI4 of the carton. What are referred to herein al side walls I5 and IEare respectively Joined to opposite edges of the bottom I4 along thefold lines I0 and I2, while whatv are referred to herein as end orintermediate walls I1 and I8 are joined to other opposite edges of thebottom I4 along the fold lines II and I3. It will be understood,however,.that in some instances the walls I5 and Il will constitute theend walls of the carton while the walls I1 and I8 will constitute theside walls thereof and thus such designation of the walls herein ismerely for the purpose of facilitating description of the carton shownin the accompanying drawings.

Corner members I9 and 20 are provided in the blank B as continuations ofthe side wall I5 and these corner members are joined to the oppositeVadjacent end wall as I'I or I8.

ends of the side wall I5 respectively along fold lines 2i and 22. Thecorner member aligned with the end wall Il and the comer member 20 isaligned with the end wall I8, but the corner members I9 and 20 arerespectively separated from the end walls I1 and I8 along lines ofseverance that will be described in greater detail hereinafter. A foldline 23 extends dlagonally across the substantially rectangular cornermember I9 and a. fold or score line 24 similarly extends across thecorner member 20.

Corner members 25 and 26 are provided at opposite ends of the side wallI6 and are respectively joined to this side wall along fold or scorelines 21 and 28, and these corner members 25 and 28 are alsorespectively aligned with the end walls I'I and I8 but are separatedtherefrom along lines of severance described in greater detailhereinafter. A score or fold line 29 extends diagonally across thesubstantially square corner member 25 and a score line 30 similarlyextends across the corner member 26.

'Ihe score lines 23, 24, 28 and 38 respectively deiine glue iiaps 3|,32, 33 and 34 on the corner members I9, 20, 25 and 26 and each such glueflap or tab is arranged in juxtaposition to the Furthermore, the edge 35of the glue ilap or tab 3| that is disposed adjacent to the end wall I'Iis cut so as to be 1nclined outwardly away from the adjacent straightend ,edge of the wall l1 so that the free end of the edge 35 issubstantially spaced from the adjacent free end of the end edge of thewall I1. The edges 36, 31 and 38 of the glue flaps 82,'

33 and 34 are similarly inclined outwardly away from the end of the endWall disposed in juxtaposition thereto.

In producting cartons in accordance with my invention resort isdesirably had to the cus'- a machine where the sheets arecut and scoredto usually afford a plurality of blanks as B in each such sheet.Thereafter these blanks are separated one from the other and the wasteportions are separated from the blanks, and these blanks are then fed ina conventional manner through a folding and gluing machine. It will beappreciated, however, that resort might be had to other practices lnorder to produce the carton of the presentinvention but the aboveexplained procedure is desirable because of the economies which result.

One way in which the illustrated carton may be initially arranged in itsfolded at condition is to rst fold the end walls I1 and I8 along thefold lines II and I3 over onto the upper or inner side of the bottom I4.The corner members I8 and 28 may then be respectively folded along -thefold lines 2| and 22 over onto the side wall I and simultaneously, ifdesired, the corner members 25 and 28 may be respectively folded alongthe fold lines 21 and 28 over onto the side f' wall I8. Thereafter, theglue flap 3I may be folded along the fold line 23 over onto the otherportion of the corner member I9 and the glue flap 32 may also at thistime be folded along the fold line 24 over onto the other portion of thecorner member 2|.'I. Likewise, at this time the corner member 33 may befolded along the fold line 29 over onto the other portion of the cornermember 25 and the glue flap 34 may also at thisl time be folded alongthe fold line 30 over onto the other portion of the glue flap 26. Sucharrangement of the glue flaps 3|, 32, 33 and 34 disposes the faces ofthese glue flaps which appear in Fig. 4 upwardly and at this time asuitable adhesive may bevapplied to these faces of these.

glue flaps. Then with the various parts arranged in these positions theside walls I5 and I8 with the folded corner members disposed thereaboveare folded over onto the end Walls I1 and I8 and by reason of theapplication of adhesive to the faces of the glue flaps as abovedescribed this will cause the glue naps to be adhesively secured to therespectively underlying end wall I1 or I 8 adjacent to the fold linealong which the particular end wall is joined to .the bottom wall andsubstantially medially of such end wall. The result of the foregoingoperation is to arrange the carton in the substantially flat conditionthereof shown in Fig. 5 with the end walls I1 and I8 disposed againstthe upper or inner face of the bottom I4 and with the side walls I5 andI6 disposed thereaboutwith the corner members I 8, 28, 25 and 28 foldedupon themselves and disposed between adjacent portions of the end wallsI1 and I8 and side walls I5 and I6.

. When the carton is arranged in its flat condition, in the mannerdescribed above or otherwise,

and-it is desired to erect the same, it is desirable vthat it be graspedsomewhat-in the manner shown in Fig. 7, which is to say, with thefingers of theV hands respectively engaged along thefree edges of theside walls I5 and I8 desirably near the medial parts of these walls, andby pulling upwardly and outwardly on these edges of the walls I5 and I6the carton is' arranged in the erected condition thereof shown in Figs.1, 2 and 3.

It has been explained hereinabove that when a carton such as that towhich this invention pertains is erected, it is desired that the same beretained in erected condition and this is realized in the presentinstance by binding the ends of the walls I1 and I8 against the walls I5and I8 when the carton is erected. Itis desirable, however, that thebinding of the Walls I1 and I8 against the walls I5 and I8 be avoidedwhen the carton is in the collapsed or at condition shown in Fig. 5, andthis is accomplished in the illus tratedcarton by providing the cut-awayor relieved edges as 35 on the glue flaps as 3| and by connecting suchglue flaps to the end wall in the manner now to be explained.

Thus by referring to Fig. 2 it will be seen that the glue flaps 32 and34 are secured to the end wall I8 exteriorly thereof and that therelieved or tapered edges 36 and 38 of these glue aps are arranged insubstantially parallel relation with the fold line I3 along which theend wall I8 is joined to the bottom I4. The glue flaps 3| and 33 aresimilarly arranged and secured tothe end wall I1. Such connection of theglue aps to the end walls, as best shown in Fig. 2, causes the sidewalls as I5 and I6 to be inclined inwardly in the erected carton so thatthe distance between the upper edges of these walls is less than thedistance between the lower edges of these walls. While it is desirablethat 'the inclined edges 35 and 38 on the glue aps 32 and 34 be arrangedin substantially parallel relation with the fold line I3, and that theinclined edges 35 and 31 on the glue flaps 3| and 33 be arranged insubstantially parallel relation with the fold line II, such relationshipis not essential. Thus, so long as the glue flaps are secured to the endwalls in such manner as to cause side walls as I5 and IIi to be inclinedinwardly toward each other in the erected carton and portions of theglue flaps do not project outwardly beyond fold lines as II` and I3, theadvantages of this invention may be realized.

In this regard, it will be noted that the end wall sections I1 and I8are respectively connected to opposite edges of the bottom section I4along the score lines II and I3 and that the length of bottom section I4in the direction of the extent sectionsv I5 and I5 at the top edgesthereof is less than the distance between these wall sections at thelower edges thereof and since the end wall sections I1A and I8 extendbetween the side wall sections Il and I8 when the carton is erected, theends of these end wall sections bind against the side wall sections andthis is effective to retain the carton in its erected condition. Thus,one of the novel aspects of my invention resides in causing oppositewall sections in an erected carton to be inclined toward each other andin .also causing at least portions of at least selected ends of wallsections of the carton intermediate such opposite wall sections toengage the opposite sections in such interengaging relation as to causethe carton to be retained in its erected condition.

A further advantage and novel aspect, of this invention is that in anarrangement such as that described hereinabove the end wall sections I1and I8, as well as the side wall sections as I and I6 are free of glueflaps, score lines and the like on the inner faces thereof whereby asmooth interior is afforded in the carton when the same is erected.

As has been explained, it is often desirable that collapsing of thecarton from the erected to the l collapsed substantially flat conditionthereof be expedited and this is especially realized in the carton ofthe present invention. Thus by referring to Figs. 2 and 3 it will beseen that the glue aps at 32 and 34 are connected to an end wall sectionas IB near the medial part of -such end Wall section and since it isonly these glue flaps on the corner members that are connected to theend wall section, the end portions of a wall section as I8 are free ofthe corner members. Advantage is taken of this arrangement when it isdesired to collapse the carton from its erected condition shown in Fig.3 to the flat condition thereof shown in Fig. 5. Thus when it is desiredto collapse the carton the thumb of one hand is disposed near one freeend of the end wall I1 adjacent to the free edge thereof, and the indexand adjacent fingers of this hand are placed near the other free `end ofthe wall I1 adjacent to the upper edge thereof. The opposite free endsnear the upper edges of the end wall I8 are similarly engaged by thethumb and fingers of the other hand and then by moving the hands towardeach other the free ends of the end walls I1 and I8 slide over the innerfaces of the side walls I5 and I6 until these end walls are moved backinto engagement with the inner face of the bottom I4, whereupon lthecarton is arranged in the flat condition thereof shown in Fig. 5. Sinceample accommodation is afforded for the end walls I1 and I8 between theside walls I5 and I6 when the end walls are moved into engagement withthe bottom I4, the end walls I1 and I8 do not bind on the side Walls I5and I6 in the collapsed carton. A carton so collapsed may be readilyre-erected byv grasping the same as shown in-Fig 'IA and as describedhereinabove.

In the form. of my invention thus far described the carton iseffectively retained in the erected condition thereof by reason offrictional interengagement between at least selected of the ends of endwall sections as I1 and IB with portions of side wall sections as I5 andI6 and, while in most of the uses to which my invention will be put suchan arrangement will prove to be entirely satisfactory, there may beinstances where it will be desirable to rely upon an interlockingrelationship between the ends of end wall sections and the side wallsections, and such an arrangement is included in the form of myinvention illustrated in Figs. 8 to 13, inclusive.

Inasmuch as the carton shown in Figs. 8 to 13, inclusive, is much likethat shown in Figs. 1 to 7, inclusive, those parts of the carton shownin Figs. 8 to 13 which correspond to parts of the carton shown in Figs.1 to 7, inclusive, have reference characters applied thereto like thoseapplied to the corresponding parts of the carton shown in Figs. 1 to 7,except that with respect to the carton shown in Figs. 8 to 13, the suxa." is added to the reference characters. There are, however, certaindifferences between the carton shown in Figs. 8 to 13 and the Acartonshown in Figs. 1 to '7. Thus, it will be noted that the ends 38 and 40of the end wall I1a. are inset inwardly out of alignment with the foldlines as Illa and I2a and the ends 4I and 42 of the end wall I8a aresimilarly arranged with respect A to the fold lines Illa and I2a.Furthermore, l. tab as 43 is provided on the end 38 of the end Wall I1substantially medially in the extent of this end of this end wall,andthe free end of this tab 43 is desirably related to the fold lineIlla in the same manner as that in which the corresponding end of theend wall I1 is related to the fold line I0 (see Fig. 4), which is tosay, the free end of the tab 43 is so related to the fold line Ia thatwhen the end wall I1a ls'folded over onto the bottom I4a and thereafterthe side wall I5a is folded over onto the end wall I1a, the tab 43 willlie fiat against the bottom I4a and will not bind upon the fold lineIlla, it being understood that the left-hand end of the end wall I1,Fig. `4, is similarly related to the fold line In. V\

Likewise, a tab 44 is provided on the end 40 of the end wall I1a andthis tab 44 is arranged on the end 40 and with respect to the fold lineI2a in the same manner as that in which the tab 43 is arranged on theend wall 39 and related to the fold line I0a. Corresponding andsimilarly arranged tabs 45 and 46 are provided respectively on the ends4I and 42 of the end wall Isa.

Moreover, the fold line 2Ia is interrupted by having an ear 41 definedby a line of severance which outlines an opening 48, the opening 48being spaced from the merger of the fold lines Illa and IIa in an amountcorresponding to the spacing of the tab 43 from the merger' of such foldlines, and additionally the opening 48 is sized to neatly accommodatethe tab 43 therein when the carton is erected, as will be explainedpresently.

An ear 49 and an opening 50 are provided along the fold line 21a and theopening 50 is related to the tab 44 in the same manner as that in whichthe opening 48 is related to the tab 43. Also, an ear 5I and an opening52 are defined along the fold line 22a and an ear 53 and an opening 54are provided along the fold line 28a, and the openings 52 and 54 arerespectively related to the taba 45 and 46 in the same manner as that inwhich the opening 48 is related to the tab 43.

The carton shown in Figs. 8 to 13, inclusive, is

initially assembled in a flat condition in the same manner as that inwhich the carton shown in Figs. l to 7 is assembled into itssubstantially flat condition, as has been described hereinabove.Moreover, when it is desired to erect the carton shown in Figs. 8 to13,-inclusive the upper marginal portions of opposite walls as lia and|40 thereof are grasped medially thereof in, for example, the mannershown in Fig. 7 with respect to the walls I5 and I6, and thereupon thecarton shown in Figs. 8 to 13, inclusive, may be arranged in the erectedcondition thereof illustrated in Figs. 8, 9 and 11.

As an incident to the erection of the carton shown in Figs. 8 to 13,inclusive, in the just described manner, the free end portions of thetabs as 43, 44, 45 and 46 will pass over the inner surfaces of theopposite side wall sections I5a and I6a in much the same manner as thatin which the ends of the end walls I1 and I8 pass over the side walls I5and I6 in the course of .erection of the carton shown in Figs. 1 to 7,inclusive. However, as the walls I5a, IBa, Ila and I8a attain theirerected or vertical positions with respect to the bottom I 4, the tabsas 46 move into cooperating relation with the openings as 54respectively adapted for cooperation therewith, and when the carton-is'fully erected the tabs as 46 will be extended through the openingsas 54 and into parallel and engaging relation with the ears as 53 in themanner shown, for example, in Figs. 11 and 13. Such insertion of thetabs as 46 into the openings as 54 effects a firm interlock between anend wall as I 8a and a side wall as I6a, and inasmuch as in theillustrated form of-thecarton such an interlock is established at eachcorner of the carton, it is manifest that the carton vill beeffectively-retained in its erected condiion.

When it is desired to restore a carton such as that shown in Figs. 8 to13, inclusive, to its collapsed and substantitally flat condition, theupper marginal portions of the end walls as' I'Ia and I'8a are engagedin the manner hereinabove explained and illustrated in Fig. 6 withreference to the end walls I1 and I8. This results in pressure beingapplied to the upper marginal portions of the end walls as Ila and Illanear the free ends lthereof and this is effective to withdraw the tabsas 46l with the fold line I3a in the manner in which corresponding edgesof the glue flaps shown in Fig. 2 are shown in parallel relation withthe fold line Il. However, by referring to Fig.A 9 it will be seen thatthe opposite walls I5a and I6a are nevertheless inclined inwardlytow'ard each other, and in this respect it is such inward inclination ofthe opposite walls as I5a and Ita that insures that the tabs as 46 willpass into openings as 54 when the carton is erected. It is desirablethat the opposite wall sections be inclined inwardly to-Is ward eachother to bring about the insertion of tabs as 46 into openings as 54 forthis enables the tabs as 46 to be so arranged that they may freely-passover an Aadjacent side wall as I 6a in the course of erectionorcollapsing of the carton without likelihood of these tabs beingdamaged in the manner which might result if the tabs as tion thereoffrom the erected conditiony thereof..

Furthermore, when the carton is in the erected condition thereof. theinterior faces of the various walls thereof are free of glue flaps,score' lines and the like whereby a smooth interior is afforded in thecarton. Yet further, when the carton is in the erected condition, theends of op.

- positewalls-thereof cooperate with other and op- 48 were formed toproject through openings as 54 in instances where the opposite walls asI5a and I6a were arranged in exact vertical position with respect to thebottom wall as I4, for if resort was had to such an 4arrangement itwould be necessary that the tabs as 46 drag over a side wall as I6a inthe course of erection or collapsing of the carton. Moreover, thearrangement of the glue flaps shown in Fig. 9 is illustrative of thepreferred arrangement of these glue tabs on the outer portion of an endwall as IBa, which is to say, the arrangement of these glue flaps onsuch an end wall in such a manner that portions of the glue flaps do notextend beyond a fold line as I3a.

posite walls of the carton whereby the same is effectively retained inits erected condition.

Among the reasons why the hereinabove explained advantages of thisinvention may be realized is the manner in which glue flaps provided oncorner members are connected to'what may well be 1called intermediatewalls of the carton. In the illustrated forms of 'the invention this isaccomplished by relieving 'edge portions of the glue flaps in suchmanner that when the glue naps are connected to an intermediate wallexteriorly thereof portions 'of the glue flaps will not project'beyondthe edge of the carton toward which they are disposed, notwithstandingthel this respect it will be appreciated that it is the inwardinclination of opposite walls of the carton toward each other thatenables certain of the advantageous aspects of this invention to berealized, among which is the effective retention of the carton in itserected condition by reason of the cooperation of at least portions ofthe ends of an intermediate wall as aforesaid with adjacent portions ofopposite walls as aforesaid. Furthermore, the interconnection of theglue flaps to medial parts of intermediate Walls, as above described, isalso effective to reinforce such intermediate walls medially thereofwhich enables the carton to better withstand the use to which it will beput,

Moreover, by reason of the fact that the'glue naps are connected tointermediate walls of the carton medially thereof, the end portions ofsuch walls are left free so that the same may be flexed inwardly tothereby facilitate collapsing of the carton from the erected conditionthereof. Furthermore, by reason of the fact that the glue naps areconnected to intermediate walls as aforesaid medially and exteriorly ofsuch walls and by reason of the manner in which such glue flaps areconnected to such intermediate walls, other and opposite walls of thecartons to which the glue flaps are connected are inclined inward- 1y sothat the distance between the upper marginal edges of these oppositewalls is less than the distance between the lower marginal edges of suchwalls and this, in connection with the fact that the end portions of theintermediate walls are free of the glue naps, enablesv at least portionsof the ends of the intermediate walls to cooperate with opposite wallsin the erected carton in such manner as to be effective to retain. the

carton in its erected condition. However, the

distance between the lower marginal portions of the aforesaid oppositewalls is such that the aforesaid intermediate walls may be moved into,engagement with the bottom of the carton to thereby be relieved of thebinding eifect when the carton is returned to its flat condition so asto facilitate transportation or other handling thereof.

While I have illustrated and described preferred embodiments of myinvention, it is to be understood that these are capable of variationand modification and I therefore do not wish to be limited to theprecise details set forth, but desire to avail myself of such changesand alterations as fall within the purview of the 4following claims. t

I claim:

l. In a carton, a bottom wall, opposite wall sections respectivelyjoined to opposite marginal edges of said bottom wall along fold lines,other wall sections disposed to extend intermediate said opposite wallsections and respectively joined to the bottom wall alongfold lines, and

inset inwardly out of alignment with the fold lines of said oppositewall sections and provided with a tab at each end thereof spaced fromthe bottom fold line, said tabs having their free ends so related to thefold lines of said opposite wail sections that when the intermediatewall sections are folded over onto the bottom wall the tabs will foldflat upon the bottom wall and not extend beyond the fold lines of saidopposite wall sections, and corner members respectively joined toopposite ends of the opposite wall lsections along fold lines and havingtabv receiving openings thereat, said tab receiving openings beingspaced from said opposite wall bottom fold lines the same distance assaid tabs said corner members being respectively secured to theintermediate wall sections in such manner as to incline the oppositewall sections toward each other in the erected carton and simultaneouslycause the tabs of the intermediate wall sections to enter the said tabreceiving openings.

2. In a carton, a bottom wall, opposite wall sections respectivelyjoined to opposite marginal edges of said bottom wall along fold lines.other wall sections disposed to extend intermediate said opposite wallsections and respectively joined to the bottom `wall along fold lines,and inset inwardly out of alignment with the fold lines of said oppositewall sections and provided with a tab at each end thereof spaced fromthe bottom old line, said tabs having their free ends so related 'to thefold lines of said opposite wall sections that when the intermediatewall sections are folded over onto the bottom wall the tabs will foldnat upon the bottom wall and not extend beyond the fold lines of saidopposite wall sections, corner members respectively Joined to oppositeends of the opposite wall sections along fold .lines and having tabreceiving openings thereat, said tab receiving openings being spacedfrom said opposite wall bottom fold lines the same distance as said tabssaid corner members being respectively secured to the intermediate wallsections in such manner as to incline the opposite wall sections towardeach other in the erected carton and simultaneously cause the tabs ofthe intermediate wall sections to enter the said tab receiving openings,and ears defined by lines of severance outlining the tab receivingopenings, said ears when the carton is erected coinciding with and beinglocated exteriorly of the tabs in abutting relation with the same.

. STANLEY J. KLEIN.

